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#1
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Idle jumps and weird load noise
I just got 2011 35i with 180k miles few months ago. After installed spark plugs, ignition coils, idle tensioner, belt, pulleys. Car runs great for couple months. Now it start having either vacuum leak or something else. Car start up great when engine cold…drove for about 10 minutes when engine warm up…I heard load (really loud whistles noise toward near transmission (flywheel area). It go up and down along when I accelerate. The idle also go up and down as the same time. Its only happened when the engine getting hot (whistles noise and idle). Car still operate as normal when this happens. Is this a vacuum leak or turbo issue? Any input will be appropriate. Thank
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Current Garage ![]() 2003 Black 4.6is 2001 Silver 528i 2008 Civic Hybrid Previous German ![]() 1994 740il----give it away for free 2001 X5 4.4---Trade 2001 325i-----Sold 2004 325i-----Sold 2006 330i-----Sold 1994 Audi 100-Sold 1997 Audi Avant-Sold 1996 Audi A4--Sold 2002 Audi A6--Sold 1999 Benz S320-Sold 2003 Benz E320-Trade |
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#2
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After some researched…I think it leading to Crankcase Valve issue and possible Rear Main Seal (RMS) have a leak.
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Current Garage ![]() 2003 Black 4.6is 2001 Silver 528i 2008 Civic Hybrid Previous German ![]() 1994 740il----give it away for free 2001 X5 4.4---Trade 2001 325i-----Sold 2004 325i-----Sold 2006 330i-----Sold 1994 Audi 100-Sold 1997 Audi Avant-Sold 1996 Audi A4--Sold 2002 Audi A6--Sold 1999 Benz S320-Sold 2003 Benz E320-Trade |
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